Line-spacing mechanism for type-writing machines.



I. A. RONCHETTI.

LINE sPAclNG MEcHANssM EoR TYPE wnmNG MACHINES.

PPLICATION FILED JUNE 5. |908. 1 162,192, Patented Nov. 3Q, 1915.

2 SHEETS-SHEET l.

IIIIII ,1. A. HUNCHETH. LINE SPACING MECH/msm FOR TYPE WRITING MACHINES.

Patente Nov. 30, 1915.

APPLICATION FILED JUNE 5.1908.

2 SHEETS-SHEET 2.

A10/asses UNITED s'rArEs PATENT oEEicE p JOSEPH ALBRT RONCHETT, OF WOONSOCKET, RHODE ISLCAND,v ASSIGNOR, BY MESNE ASSIGNMENTS, T THE NOISELESS NECTICUT, A COB-,TEORATION OF CONNECTICUT.

vLNE-SRl-XCIIIG- MECHANISM FOR TYPE-WRITING MACHINES.

' vTo all whom t may concern.'

` lvoonsocket, in the county of Providence Fig. 2;

and State of Rhode Island, have invented certain new and useful improvements in LineSpacing Mechanism for Type-Whiting Machines, of which the following is a'full, clear, and exact description, such as willenable others skilled in the art to which it appertains to make and use the same.

My invention relates vto the line spacing mechanism of typewriting machines and has forits object to provide mechanism for that purposewwliich is practically noiseless in operation, a'nd, further, to provide improved means for causing the platen roll to register with the lines and for lfreeing it to permit universal spacing. y p

ln the accompanying drawings, wherein is illustrated one of the various possible embodiments of my invention,` Figure 1 is an" elevational view showing the same, the view .being taken substantially on line 1-.1, of

Fig. 2 is a side view thereof looking from'theleft-hand end of Fig. 1; Fig. 3 is a sectional view showingthe ratchet wheel release devices, the view being taken on line 3 3 of Fig; 1; Fig. 4 is a view showing the parts positioned upon the left-hand end of the carriage` but in a different position;

Fig. 5 isa view upon an enlarged scale takenA substantially lon line 5-5 of l? ig. 1; Fig. 6 is an end view upon an enlarged scale; and Fig. 7 is a similar front view of a-device for controlling the positionV of the line-space pawl; Fig. 8 is an enlarged sectional view taken on line 8-S of Fig. 1, showing the manner of supporting and adjustingthe alining scale. Fig. 9 is a view in elevation of a different embodiment of alining scale.

Similar reference characters refer to similar parts in the several `views of the drawings.; f

Referring now to the drawings, 1 denotes a portion of the centertie-rod whichl extends transversely of the machine and forms a support for the platen carriage and associated mechanism. This center tie-rod is provided with an upwardly extending portion or horn 2 against which the platen carriage rests, said platen carriage `being mounted upon rail 4 which extends longi.

tudinally of the machine and upon which- Applieation filed June 5, 1908. Serial No. 436,751.

specification of Letters Patent. Patented NOV.' 30, 1915i it rides for letter-spacing, said rail being TYPEWRITER C OMANY, OF MIDDLETOWN, CON- vertically movablev to shift the platen for different case printing.

A paper carrier in the present embodi-V ment consisting of a platen roller 5 is mounted upon a shaft G journaled in the side members 7 of` the platen frame, said 'shaft being provided at its ends with' knobs,

`one of which is shown at 8, by m'eansof which the platen roll may be rotated. The platen which, in the present instance is constituted by a .thin strip of metal 10, which has a front plane face for 'receiving the types and a rear curved face to conform with the contour of the platen roll, is mounty ed upon the platen` frame and supported thereon at its ends by the side members 7 thereof; see Figs. 1 and 2.

11 denotes an' actuating member' in the form of a ratchet wheel which is mounted upon shaft (i of the :platen roll and is provided with crown ratchet teeth 12, and also `has a plurality of peripheral teeth'13 which are disposed circumferentially about the same, the spaces between said teeth forming notches. y v f Supported by means of a pivot screw 15 (see Fig. 1) upon an ear 16 secured to the lefthand end of the platen carriage, ,about which it oscillates, is an actuating or linespace lever 17, said lever `being held in the position shown in Fig. 1 of the drawings, by means of a retractile spring 18 connected with an ear 20 formed upon, the line-space lever adjacent the pivot thereof and also connected with a lug 21 formed upon abracket which supports ear 1G. A pawl 22 y is pivotally attached to the line space lever p by means of a pivot screw 23 and between this pawl and the lever, and held in position by means of the pivot screw is a friction ring or member which is in the present 'in-A stance a spring washer 241. l .ln order to maintain the end 25 ofpawl 22 adjacent the teeth 12 of the ratchet wheel, n

but out Vof contact-therewith when said pawl occupies its normal i pivotally attached, as at 27, to the platen carriage and has its opposite end hooked, as at 28, to enter an elongated vrecess 30 provided in the pawl. The spacing the ratchet wheel is regulated by meas of a gage stop 31wliich is fixed upon pin 32 journaled in a bracket 33 carried by the lineposition, a link 26 isY space lever, said stop gage in the present instance being held ill one ol several adjusted positions by means ot a spring pill 31 engaging suitably'spaced notches ill bracket 33. The clld 255 ot this gage stop engages the rear tace ot the pawl i2 wllell the same has been. engaged witll the teetll ot the ratchet wheel during an actuation ot' the lille-space levell alld lilnits the throw ot thel pawl ill accordance with'the particular position in wllich said gage stop is adjllsted upon the lille-space level'. In the present instance, notclles 36 are provided in the back of the pawl i2 with which the elld 555 of the gage stop engages. The throw' olf the pawl 22 may therefore be regulated 'lor any desired nulnber otl spaces.

In order yto register the lilatell roll correctly al'ter rotation, a detentl 23T is provided, said detent bcillg a roller jollrllaled in ears 38 provided upon a spring 10, said sprillg beillg provided with elongated slots 4.1 for receiving screws l2. by lnealls ol which it is adjustably vfastened to the platen carriage. Roller 3T engages with peripheral notches it ot they ratcllct wheel and registers the platen roll ill a lnallller which will be readily ullderstood. The slots -ll wllicll are provided ill the spring -l-t) permit ol theI forward alld backward adjustment ol the detent, whereby the teeth l2 ol the ratchet'- wheel may be carried to such positionsl as to be in proper relation to the elld ot' the lillespace pawl 22. In order to release the spring-pressed detellt l'lonl the notches lil of the ratchet wheel, a lever ll i is journaled upon the shallt t3 ol the platen roll` said lever being provided wit-ll a handle lvl. by means of which the same may be manipulated. Lever ld, in the present instance. is provided with notclles l5 alld lo. which engage with one of the ears 23N ol' the detent supporting spring 10. iVhcn notch l5, which is the deeper ot the two, is ill engagement with all ear 3S, the detent is in engagement with tlle notches ot the ratchet wheel, but when lever 43 is swung to the position sllowll ill Fig. 3 ol the drawings` notch 1G engages the ear 38 and lilts the detent out ot engagement with said notches and frees theratchet wheel, whereby the platen roll lllay be lreely rotated tor universal spacing. Ears t7 and -lS are provided upon lever fl t'or preventing.;` an over-throw thereol in either direction.

5() denotes the alilling scale member." which is provided with an alillillg edge 5l, a eiltaway portion 52 and a projecting ear 525. The alining scale member is provided with a pair ot depending arms 5l which are pivote'd upon screws 55 threaded ill the ends ot a supporting shaft 5G, the latter being tixedas by-lneans ot' a set screw 57 ill the center tie-rod Screws are mounted eccentrically ill the ends ol sha tt' 5o ill order to enable the alinine scale member to be adjusted' vertically by rotation of shaft 56 (see Fig. 8), after which said shaft may be held' in fixed position by means of the set screw 57i The edge 51 of the alining scale inember may be graduated as shown, it' desired.

In Fig. of the drawings the alining scale 50 is shown as being inclined toward the platen alld rests thereagainst, being held in such position by gravity. In Fig. 5), however, the line scale member is pivoted sub-A stantially below the platen and is held thereagainst. by means ot al leaf spring 58. Tl-e alining scale mechanism shown in. the drawings alld above described forms the subject return movement ot' the. line-space lever to normal position, the pawl 22 will be inslalltly disengaged t'rom the teeth ot the ratchet wheel, and the point thereot willbe moved downward substantially in a straight lille by llleans ot: the link 2G which collllects the pawl with the platen carriage. 'hen the line-space lever has returlled to'its nornlal position. the end '25 ot the pawl will be adjacent tothe teeth ot the ratchet wheel but out otl colltact therewith` as shown ill Fig. 1 of the drawings. iVhen it is desired to le. lease the platen roll lor lllliversal spacing, it is lllerely llecessa ry to rotate lever tlto engage the notch vlli thereol with the ear 21S ot the detent supporting spring. whereupon the detent 3T will be lifted beyond the peripheral teeth 1l ot the ratchet wheel. j

Tt', will accordingly be seen that t have provided mechanism well adapted to attain, among others` all the endsI and objects above pointed out. in au exceedingly simple vet ellicient manner. Since the l'eed pawl is normally disengaged trom the ratchet wheel alld is ill engagement therewith only when theplaten is engaged lor line-spacing;the' entire line-spacingoperation is accomplished with the production oitf very little noise., there being no dragging or Aclicking ot' the teeth ol theI end ot` the pawl over llle teeth ot' the ratchet wheel. l j As nlany changes could be iliade in the above construction and many" apparently widely dillerent cmbodigllents of this 'invention could be made withoutl departingtroln the. scope thereol. it is intended that alt matter contained in the above description or shown ln the.'accompanying drawlngs shall be interpreted as illustrative and not in a limited sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

l. In a typewriting machine, the combination with the platen carriage, of a platen roll journaled therein, a ratchet wheel car ried by said platen roll, a line-space lever mounted to swing upon said platen'carriage,

a pawl pivota-lly mounted upon said linespace lever and adapted to be swung into engagement with the teeth of said ratchet wheel, means mounted onV said lever for varying the thro-w of said pawl, and means connecting said pawl with a fixed portion of the platen carriage for holding the former adjacent the .teeth of said ratchet wheel.

'2. In a typewriting machine, the combination with the platen carriage, of a platen roll.

journaled therein, 'a kratchet wheel mounted upon said platen roll, a line-space lever swiveledupon the platen carriage, a kpawl pivoted upon said line-space lever normally maintained out of engagement with the teeth of. said ratchet wheel, but adapted to be swung into engagement therewith when said line-space lever is actuated, and a movable link connecting said pawl with a fixed portion of said platen carriage for maintaining the same operative position closely adjacent said ratchet wheel.

3. ln` a typewriting machine, the combina-l tion with the carriage, of a platen roll mounted thereon, a ratchet' wheel on said roll, a line-space lever swiveled upon the 4. In a typewriting machine, the combination with the platen carriage, of a platen roll journaled therein, a vratchet wheel mounted upon said platen roll, a line-space lever pivotally mounted upon said platen carriage, a pawl pivotally mounted upon said line-space lever and normally held out of engagement with said ratchet wheel, and a friction member associated with the connection between said line-space lever and.

said pawl for operating said pawl.

5. In a'typewriting machine, the combination with the platen carriage, of a platen roll mounted thereon,v a ratchet wheel mounted upon said platen roll and adapted when rotated to rotate Said platen roll whereby the paper will be ized, a line-space lever mounted to swing upon said carriage, a pawl pivotally mounted upon said linespace lever and frictionally connected thereto whereby it is carried into VVand out of engagement with saidratchet wheel-as said lever oscillates, and means connecting said pawl with a fixed portion of the'platen carriage and adapted normally to hold the Yformer adjacent the teeth of the ratchet wheel and out of contact therewith, n

6. In a typewriting machine, the combination with a platen carriage, of a platen rolll mounted thereon,- a ratchet wheel mounted upon the shaft of, said plateniroll, a linespace lever pivotally mounted upon the platen carriage, a pawl pivo-tally mounted upon said line-space lever and adapted when the latter is actuated to be swung into. en-

gagement with the teeth of said ratchet wheel to rotate the same, means connected with a fixed portion of the carriage for holding said pawl adjacent the teeth of said ratchet wheel and out of contact therewith, and an adjustable stop gage mounted upon said line-space lever adaptedto regulate the throw of said pawl.

T'. In a typewi-'iting machine, the combination with the platen carriage, of ,a platen roll mounted thereon, a ratchet wheel mounted upon said platenvroll, a linespace lever pivotally mounted upon the platen carriage, a pawl mounted upon said linespace lever and a friction member associated with Athe connection between said-linespace lever and said pawl whereby said Dawl will be moved toward the teeth of said ratchet wheel at the instant ot' actuation ot' said line-space lever and will bev disengaged t'rom said teeth at the instant of the beginning ol the return movement of said line-space lever.

8. ln a typewriting machine, ,the combination with the platen carriage, of a platen roll mounted therein, ay ratchet wheelicarried bv lthe platen roll, aline-space leverpivot'# ally mounted upon the platen carriage, 'a pawl pivotally mounted uponsaidline-space lever and normallyheld adjacent but out ot' contact with the f teeth'of said ratchet wheel, a friction member associated with the connection between said line-space lever and said pawl, whereby said pawl will be instantly thrown into engagement with the' teeth o t' said, ratchet wheel upon an actuation of said line-space lever and will likewise he instantly disengaged from said teeth upon Y the return movement of said line-space lever, and means connected with said paWl adapted to return the sameto a position in adjaceucy with the teeth of said 'ratchet wheel. S). In a typewriting machine, the combination with the platen carriage, ofl a platen roll mounted thereon, a ratchet wheell car.;

ried hy said platen roll, a line-space lever mounted to swing upon the platen carriage,

a pawl pivotally mounted upon the linespace lever, a friction member associated with the connection between said line-space lever and said pawl, means for holding said pawl adjacent the teeth of' said ratchet wheel, and a gage stop rotatably mounted upon said line-space lever and adapted to engage with'said pawl when said line-s`pace lever is actuated, whereby the throw of said pawl maybe regulated. 1

l0. ln a tyi'iewriting machine, the combination with the platen Carriage of a platen roll mounted thereon, a ratchet wheel carried b y the platen roll, a line-space lever pivotally mounted upon the platen carriage,

a pawl pivotally mounted upon said linespace lever, said pawl having a plurality of notches formed in the back thereof, and a stop gage adjustably mounted upon said line-space lever and adapted to engage with one ol said notches, when the line-space lever is actuated to thereby limit the throw of said pawl in accordance with the adjust-- ment ot' said gage.

ll. In a typewriting machine, the combi- 1 nation with the platen carriage, of a platen roll mounted thereon, a ratchet mounted upon the shaft of said platen roll, a line-space leverpivotally mounted upon the platen cai'riage,- a notched pawl mounted upon said line-space lever, and an ad- Iinstable stop gage mounted upon said linespace lever and adapted to engage with one thereto, and a resilient device associated wheel with the pivotal connection between said parts adapted yieldingly to hold the pawl in normal fixed relation thereto.

14. ln a typewriting machine, the combination with the platen carriage, of a platen roll journaled therein, a peripherally notched ratchet wheel mounted upon the shaft of said platen roll, a detent engaging the peripheral notches ot said ratchet wheel to register the'platen roll after rotation, a spring support upon which said detentie mounted adjustably secured to said carriage, and a lever mounted upon the shaft of Said platen .roll and having a plurality' of notches, one oi said notches engaging the support of said detcnt when the latter is in engagement with the ratchet wheel, said lever being adapted to be swung te engage the other notch thereof with said support, whereby said deten't is lifted from engagement with said ratchet wheel.

l5. in a typowri ing machine, the combination with the platen carriage, of a platen mounted thereon, a ratchet wheel carried by the shaft ot' said platen roll, a line-space lever pivotally n'iounted upon the platen carriage, a line-space pawl mounted upon said lever, and an adjustable stop gage mounted upon said line-space lever normally out oft engagement with said pawl adapted when saidline-apace lever i.' actuated to engage with fliii'eieiit portions ol said pawl to limit the throw thereof.

16. in line spacing mechanism for typewriting machines, in combination, a paper carrier, a` member carried thereby and arrange to be operated upon to move said paper carrier lor line spacing, an actuating lever, and a pawl mounted thereon movable thereby into and out of engagement with said member solely by its irictional connection with said lever.

ln testimony whereof l. afhx my signature, in the presence ottwo witnesses.

JGS?" t.. ii. nl. terminus.

JH ALBERT RGNUHETTIQ 

